Rolled metal bar for use in making horseshoe-calks



(No Model.)

G. W. WEMPLE. ROLLED METAL BAR FOR USE IN MAKING HORSESHOE GALKS. No. 539,841

Patented May 28, 1895.

+ Fig. 3.

Wlnzzsses: mum/M.

fiwenlor: George Wmm nlc,

Mrney UNITED STATES I PATENT OFF-ICE.

GEORGE IV. VVEMPLE, OF BOSTON, MASSACHUSETTS.

ROLLED METAL BAR FOR USE IN MAKING HORSESHOE-CALKS.

SPECIFICATION forming part of Letters Patent No. 539,841,11ated May 2 8, 1 895.

Application filed July 31, l 894.

To all whom it may concern.-

Be it known that I, GEORGE W. WEMPLE, of Boston, inthe county of Suffolk and State. of Massachusetts, have invented certain new anduseful Improvements in Rolled Metal Bars for Use in the Manufacture of Horseshoe- Oalks, of which the following, taken in connection with the accompanying drawings, is a specification.

My invention relates to rolled metal bars for use in the manufacture of horseshoe calks, and has for its object the production of a rolled metal bar or plate having a suitable structural formation to adapt it for use in the manufacture of horseshoe calks, of the kind termed detachable calks and which are provided with tapering shanks to be driven into correspondingly tapered holes in the horse shoe and it consists in certain novel features of construction and arrangement of parts which will be readily understood by reference to the description of the accompanying drawings and to the claims hereto appended and in which my invention is clearly pointed out.

Figure 1 of the drawings is a side elevation of a bar from which calks having thick or blunt tread surfaces may be formed. Fig. 2

is an end view of the same. Figs. 3 and 4 are respectively a side elevation and an end view Fig. 5 is a side elevation of a bar adapted to the manufacture of sharp-edged calks. Fig. 6 is an end view of said bar. Figs. 7 and 8 are respectively a side elevation and an end View of a calk cut' from the bar shown in Figs. 5 and 6, and Fig. 9 is a plan of a calk cut from either bar.

In the manufacture of horseshoe calks provided with tapered shanks and designed to be secured to the shoe by inserting said shanks in correspondingly tapered holes in the shoe it is very desirable that the shanks on said calksshould be of uuiformsize and at a uniform distance apart, and also that said calks should be produced at a minimum of cost. To this end I have conceived the idea of rolling steel bars having cross sections corresponding to the cross sections of two calks cut through the shanks of the calks when said calks are placed side by side with their tread or bearing edges toward each other and connected together by a thin film or section of slain No.'519,074. (No model-l metal so that by the employment of suitable male and female dies two calks can be punched from said bar or plate at one operation of said to said surfaces at, a, also extending longitudinally of said bar but inclined in the opposite direction or toward the center of said bar, and a thin web or section 0 between said inclined surfaces said thin film like portion serving to connect the two thicker portions of the bar, each of which is of the desired shape in cross section from which to form calks by cutting sections therefrom of the desired lengths that the calks are to have, and punching out portions of the member a to form the prongs d of the calks as indicated in dotted lines in Fig. 1 said calks being illustrated in full lines in Figs. 3, 4, 7, 8, and 9.

In some cases I may roll bars of a width equal to the height of a single calk plus the length of the prongs or shanks desired, or of one half the width of the bars shown, but generally I prefer to roll the bars of a width equal to twice the height of the desired calks, plus twice the length of the shanks of said calks and a narrow thin strip to be punched bers b b are rolled with a greater or less iuclination to the center line of the bar as indicated by the dotted line 2, 2, on Figs. 2 and 6, according as to whether blunt or sharpened calks are to be produced from said bar.

v the center of the width of the bar as shown in Figs. 1 and 2, so that two calks of different heights may be formed from the same bar at a single operation of the punching dies.

It is very essential in forming cal ks of the description illustrated in the drawings that the cuts at the base of the shanks e that are parallel to the edges of the bar should be at right angles to the center line 2, 2, on Fig. 2, and this desirable end can be obtained with much greater certainty by making the bar wide enough for two calks so that in punching the calks there will be an equal amount of cutting to be done at each edge of-the bar.

The bars as shown in full lines in the drawings show the inclined surfaces a and bseparated by shoulders ff but said shoulders are not a necessary or essential feature of my invention, but rather an incident dependent upon the size of the calk required to be produced, as for instance if a heavy calk is required the bars will have said shoulders as the calk will be thicker through its base, but if a light calk is to be produced the bars would be rolled without said shoulders as indicated by the dotted lines on Fig. 6.

WVhat I claim as new, and desire to secure by Letters Patent of the United States, is-

1. A rolled metal bar havingits two broader sides duplicates of each other and each comprising two plane surfaces extending longi tudinally of said bar along the opposite edges of said bar and each slightly inclined toward the edge of the bar; two other plane surfaces extending longitudinally of said bar contiguous to the first mentioned plane surfaces and each inclined toward the center of the width of said bar; and a thin or reduced section at or near the middle of said bar having sides parallel to each other, substantially as described.

2. A rolled metal bar having its two broader sides duplicates of each other, and comprising the two outer members a tapered toward the outer edges of said bar; the two members I) tapered toward the center of said bar; the shouldersf facing toward the edges of the bar; and the thin member 0 having parallel sides, and connecting the membersb b substantially as described. 4 r

In testimony whereof I have signed my name to this specification, in the presence of two witnesses, on this 30th day of July, A.D. 1894.

GEORGE NV. W-EMPLE.

\Vitnesses:

N. O. LOMBARD, H. THEODORE FLETCHER. 

